Perhaps you should try some spelling variations:
causes communication » mass communication, crisis communication, assess communication
developpement en » developpement et, developpement des, developpement de
information 1.2 » information 1.5.2, information 2
4 developpement » de developpement, le developpement, et developpement
states causes » states cases, states case, states costs
technology 1 » technology _
1.2 states » 1.2 status, 1.2 state, 4.2 states
costs 4 » costs _, costs a, costs 4.2

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology 1 information 1.2 states causes communication costs 4 developpement en afrique.*.